1959•Journal of Basic EngineeringRequires access

Cavitation and NPSH Requirements of Various Liquids

V. Salemann

Abstract

Test results on the net positive suction head, NPSH, requirements for centrifugal pumps handling water up to 420 F, some hydrocarbons, and Freon-11 are presented. Satisfactory pump performance was observed with net positive suction heads less than those required by the pump on cold water. A direct measurement of NPSH was attempted and is reported. The cavitation process is discussed and a correlation and method of prediction for all liquids is proposed.

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Key concepts: NPSH, Cavitation, Centrifugal pump, Freon, Suction, Head (geology), Materials science, Mechanics